Calcium: mg/dL ↔ mmol/L converter
Convert calcium between mg/dL and mmol/L instantly - type a value in either box. With the exact formula, a reference table and what it means for your result.
Formula: mmol/L = mg/dL × 0.2495
Common values
| mg/dL | mmol/L |
|---|---|
| 8.5 | 2.12 |
| 9 | 2.25 |
| 9.5 | 2.37 |
| 10 | 2.5 |
| 10.5 | 2.62 |
Frequently asked questions
What is the formula to convert calcium?
mmol/L = mg/dL × 0.2495. To go the other way, divide instead of multiply.
Which unit does my country use for calcium?
The US typically reports mg/dL; most of Europe, Russia and Israel use mmol/L. Your lab prints its unit next to the value.
Does converting change what my result means?
No - it's the same value in a different unit. Always compare it to your own lab's reference range and discuss with your doctor.
Reading a full lab report? See the Calcium marker guide or upload your report - Mediora explains every value.
Upload a test - freeConversion is provided for convenience - always read your result against your own lab's units and reference range, with your doctor.